<template>
  <div class="swiper-container" ref="imgSwiper">
    <div class="swiper-wrapper">
      <div class="swiper-slide"  v-for="(img,index) in imageList" :key="img.id">
        <img  :class="{active:activeFlag===index}" @click="changeImg(index)" :src="img.imgUrl">
      </div>
<!--      <div class="swiper-slide">-->
<!--        <img src="../images/s1.png">-->
<!--      </div>-->
    </div>
    <div class="swiper-button-next"></div>
    <div class="swiper-button-prev"></div>
  </div>
</template>

<script>

import Swiper from 'swiper'

export default {
  name: "ImageList",
  data() {
    return {
      activeFlag: 0,
    }
  },
  props: {
    imageList: {
      type: Array,
      default: () => {
        return []
      }
    }
  },
  methods: {
    changeImg(index) {
      this.activeFlag=index
      this.$bus.$emit('changeImg',this.activeFlag)
    }
  },
  watch: {
    imageList: {
      immediate:true,
      handler(){
        this.$nextTick(() => {
          new Swiper (this.$refs.imgSwiper, {

            slidesPerView:3,
            slidesPerGroup:2,

            // 如果需要前进后退按钮
            navigation: {
              nextEl: '.swiper-button-next',
              prevEl: '.swiper-button-prev',
            },


          })
        })
      }
    }
  }
}
</script>

<style lang="less" scoped>
.swiper-container {
  height: 56px;
  width: 412px;
  box-sizing: border-box;
  padding: 0 12px;

  .swiper-slide {
    width: 56px;
    height: 56px;

    img {
      width: 100%;
      height: 100%;
      border: 1px solid #ccc;
      padding: 2px;
      width: 50px;
      height: 50px;
      display: block;

      &.active {
        border: 2px solid #f60;
        padding: 1px;
      }

      &:hover {
        border: 2px solid #f60;
        padding: 1px;
      }
    }
  }

  .swiper-button-next {
    left: auto;
    right: 0;
  }

  .swiper-button-prev {
    left: 0;
    right: auto;
  }

  .swiper-button-next,
  .swiper-button-prev {
    box-sizing: border-box;
    width: 12px;
    height: 56px;
    background: rgb(235, 235, 235);
    border: 1px solid rgb(204, 204, 204);
    top: 0;
    margin-top: 0;

    &::after {
      font-size: 12px;
    }
  }
}
</style>
